Precision infrared position detector apparatus for touch screen system

摘要: The precision infrared position detector apparatus uses an information display device that has a substantially cylindrical shaped screen to limit curvature of the single dimension. In addition, compensate for this curvature, flexible printed circuit board is used align row light sources and detectors along same as device. A first equipped with while second signal corresponding detectors. frame member bend into shape matches manner, boards are placed at opposite ends rectangular thereby transmit plurality parallel beams light, each which predetermined distance above even though curves in cylinder.